a bluebird, Siala currucoides, of western North America.
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How to use mountain bluebird in a sentence
They’ve fallen gradually over the years, some enduring for decades, the woodpecker holes in their trunks housing generations of mountain bluebirds and tree swallows.At Glacier’s Edge, the Flames Have Always Come for My Family Cabin | jversteegh | August 20, 2021 | Outside Online
Here I also saw my first mountain bluebird, whose back and breast are wholly blue, there being no rufous at all in his plumage.Birds of the Rockies | Leander Sylvester Keyser
In the grove about the barns there was a great number, the most attractive to me being the mountain bluebird.Camping with President Roosevelt | John Burroughs